Automatic regulator for gas-furnaces.



N. N[ GOGOT ZKY. AUTOMATIC REGULATOR FOR GAS FURNACES.

APPLICATION FILED JUNE 21.1912. 1 177,3 17. Patented Mar. 28, 1916.

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APPLICATION FILED JUNE 21, 1912. V I I v Patented Mar. 28,1916.

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N. N. GOGOTZKY. AUTOMATIC REGULATOR FOR GAS FURNACES.

1,177,317. APPLICATION FILED IUNE 21, 1912. Patented Mar.

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i AUTOMATIC REGULATOR FOR GAS FURNACES.

APPLICATION FILED JUNE 21, 1912.

Patented Mar. 28, 1916.

5 SHEETSSHEET 4.

N. N. GOGOTZKY. AUTOMATIC REGULATOR FOR GAS FURNACES.

APPLICATION FILED JUNE ZI, I912.

- Patented Mar. 28,1916.

5 SHEETS-SHEET 5 l l l I L 7 {gm 0c n for, M 2' 1&4 k7 3151 5115 flHommMZ/Z' ED STATES rarnn nrcn.

NICHOLAS N.GOGQTZKY, 'OF EKATERINOSI IAW, RUSSIA.

AUTOMATIC REGULATOR FOR GAS-FURNACES.

Specification of Letters Patent.

Fatented Mar. 28, 1916;

Application filed. June 21, .1912; Serial No. 705,094. I

i To all whom it may concern:

in such mannerthat the excess of air shall be normal, that is to say,correspond to the complete and most economical combustion I of the gasnotwithstanding the unavoidable variations of its pressure. Considerabledifficulty has been experienced with furnaces of steam boilers and hotblast apparatus fed by the gas of blast furnaces because the latter,only being a byproduct, is supplied irregularly according to the mannerin which these blast furnaces are operated. The changes of the uantity,

andhence the pressure'of gas coming from blast furnaces, are so suddenand frequent that, withno automatic regulation or with hand adjustment,the combustion is inevitably effected either with excess of air or withexcess of gas, and accordingly either with loss of unburned gas or withloss of heat carried ofi by the exaggerated excess of air. Theconstruction of a gasometer adapted to supply the gas at a substantiallyuniform pressure would be embarrassing because it would necessarily haveextraordinary dimensions to accommodate the prodigious quantity of gasyielded by modern blast furnaces.

In accordance with the present invention, the regulation of the airsupply is effected by the employment of a relatively small gasbellcontrolling the movements of suitable valves, with or without anyintermediate mechanism. I

In'the most complete form of apparatus bylwhi'ch the invention has beencarried into effect the supplyv of air is regulated by both inlet anddraft controlling valves actuated by a motor which in turn is controlledby the variations of gas pressure. I

The invention consistsin the novel improvements, parts and combinationsof parts herein shown and described.

The drawings referred to herein andv forming'a part hereof illustrateseveral embodiments of the invention and serve in connection with thedescription herein to explain the principles of the invention.

Of the drawings: Figure 1 is a sectional, diagrammatic view,illustrating one manner of carrying the invention into eflect; Fig. 2

is a similar view, illustrating another embodiment of the invention;Fig. 3 is an end elevation, illustrating an application of the apparatusshown'in Fig. 2 to a number of furnaces Fig. 4 is an elevation of theopposite end of the apparatus shown in Fig. 3; Figs. 5 and 6 arerespectively a side elevation, partly in section, and an end elevationof one of the details of the embodiment shown in Fig. 2; and Figs. .7and 8am respectively a plan view and end elevation,

partly in section, of an embodiment of the inventionas applied to hotblast'apparatus.

The apparatus illustrated in Fig, 1 comprisesa small gas'bell 1,provided with a weights 4, so calculated that the positions ofequilibrium correspond substantially to the variations of pressure inthe conduit '9 conducting the gas to the furnace. A gasbuoyant member 2and lever 3, with counteru pressure pipe 10 connects the conduit withthe interior of the bell. The lever 3 is connected with an air-valveinlet 6 and a draft valve 8 by two cables5 and 7, respectively, andoperates in such -manner that when the pressure of the gas in the main 9is zero, both valves are closed; and on the contrary, when there isv apressure of gas, the valves are opened far enough to permit theadmission of the air with a normal excess. The greater the presthevalves 6 and 8 open.-

The extreme positions of the valves and the lengths of the cables are,determined accordingv to the analyses of the burnt products in orderthatin the intermediate positions the excess of air shallbe favorable to160 the most economical combustion 'of the gas- In the case of a numberof furnaces, either for a battery of steam boilers'or for a series ofhot blast apparatus, where there would necessarily be several valves tobe controlled. the force of'the small gas bell might not be sufiicientto actuate the valves sure the higher the bell lifts and the farther ortheir equivalents. In that case the more ments of the gas bell areemployed to op crate thedistributing member of a suitable motor,hydraulic, steam, compressed air,

blast apparatus in Figs. 7 and '8. As shown,

this motor comprises a hydraulic cylinder 11 having its plungerconnected with the valves 6 and 8 by means of a cable 13 and a rod 12,respectively.. Water under pressure is admitted to, and cut off anddischarged from, the cylinder 11 to control the movements of theplunger, by means of a three-way valve 15, the arm let of which isconnected by a link 18 with a lever 17 connected at one end directly tothe plunger and at the other end to the gas bell by acable 16 providedwith-counterweights 1.9.

When the arm 14% of the valve 15 is horizontal, the water is cut oflfrom the hydraulic cylinder and its plunger. It will seen thatanymovement of the gas bell will move the three-way valve 15 either toadmit water to or discharge it from the hydraulic cylinder, dependingupon the di- --rection of the motion, and that thiswill re sult in acorresponding degree of move mento'f the plunger .which will restore thevalve to its normal position. --By reason of this construction, the gasbellhas to overcome only .the slight resistance of the valve 15, thevalves 6 and-.8 being moved by the plunger which'may be made as powerfulas desired by properly determining} its area and thepressure'of the water. While the plunger shown as single-acting, a. e., as-

being 'movedin one direction by the water Y and in the other directionby its own weight ,40

together with the net weight of the connect-.

ed parts, it is obvious'that a double acting piston may be employed ifdesired.

operators work as far as possible, the admission valves of the furnacesmay be automatically controlled by means like or similar tothe meansherein shown anddescribed for controlling the air and them in shown anddescribed, as many changes may be made without departing from the mainprinciples of the invention or saorificing its chief advantages.

I claim}. I V 1. A selflregulating furnace for burning gas supplied froma naturally fluctuating source,- the same including in combination, thefurnace walls within which the mixing and combustion takes place, a gasinlet. thereto from the fluctuating source, an air inlet for atmosphericair under naturalpress sure, a draft outlet, an air valve device insaid. air inlet for varying the air inflow by restriction. of saidinlet, a movable regulator actuated by pressure fluctuations in the, gas

supply source, and connections whereby the movements" of said regulatorcontrol the ad- I justment of said air valve device so as toautomatically vary the air inflow quantitatively in accordance with .thegas inflow.

2. A self-regulating fu'rnace'for burning-9'5 gas. supplied from anaturallyifluctuatingf source, the same including, in combination,-- thefurnace walls within which the-mixing and 'combustion takes place, a gasinlet thereto from'the fluctuating source, anair inletffor atmosphericair. under natural pressure, a .draft outlet, an. air. valve device insaid air inlet for varying the'air inflow by restriction-of said inlet,a draftvalvedevice for varying the draft outflow, a movable regulatoractuated bypressure fiuctua tions in the gas supply source, and conof.boilers, showing theair valves 6*each connected by a rod or cable 20'andbellcrank F g. 3 represents the front-of a battery nections whereby themovements of said; regulator control the adjustment of both said valvedevice so as to automaticallylvary with a rod 21 which in turn isconnected through "one of the bellcranks with the 'cable' 13. I

Fig. 4 represents the same of steam boilers from the sides of the draftvalves and shows these valves coupled to each other and to the rod 12 ofthe hydraulic cylinder by links 22, bellcranks 23 and rod 24.

Figs. 6 and 7 .show a plan view andele-k v'ationv ofan installationofhot blast apparatus equipped with the hydraulic motor.

system of control for the air inlet valves 6 and the draft valves 8which are connected respectively by-linksl25 and bellcranks 26 'with'arod or cable27 which in turn connects through a lever 28 with "theplunger of the motor.

'As an improvement, it is pointed out that,

both theair inflow-and the draft outflow in lfilarmony with fluctuationsin the gas inow.v I

' 3. A self-regulating mechanism for a plurality of'furnaces for burninggas sup- 11'5 plied from a naturally fluctuating source, thesameincluding, in combination, a plurality of furnaces within which themixing i and combustion takes place, a gas inlet to each" furnace fromthe fluctuating soul-(22 an air inlet to each furnace foratmospheric airunder natural pressure, a draft outlet from each furnace, a plurality ofair valve devices one located in each of said air inlets for varying theair inflow to each furnace, a movable regulator actuated by pressurefluctuations in' the gas supply source. and connections whereby themovements of a said regulator control the adjustment of all 1 of aid airvalve devices sons to automatically vary the air inflow to all of saidfurnaces quantitatively in accordance with the gas inflow.

4:. A self-regulating mechanism for a plurality of furnaces for burninggas supplied from a naturally fluctuating source, the same including, incombination, a plurality of furnaces within which the mixing andcombustion takes place, a gas inlet to each furnace from the fluctuatingsource, an air inlet to each furnace for atmospheric air under naturalpressure, a draft outlet from each furnace, a plurality of air valvedevices one located in each of said air inlets for varying the airinflow to each furnace, a movable regulator actuated by pressurefluctuations in the gas supply source, and connections, including asingle valve adjusting motor, whereby the movements of said regulatorcontrol all of said air valve devices so as to automatically vary theair inflow to all of said furnaces quantitatively in accordance with thegas inflow.

5. A self-regulating mechanism for a plurality of furnaces for burninggas supplied from a naturally fluctuating source, the

a plurality of draft valve devices one for varying the draft outflow ofeach furnace, a movable regulator actuated by pressure fluctuations inthe gas supply source, and connections whereby the movements of saidregulator control all of said valve devices so as to automatically varyboth the air inflow to and the draft outflow from all of said furnacesquantitatively in accordance with the gas inflow.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

NICHOLAS N. GOGOTZKY.

Witnesses:

ANnRn M. BAUCHTEIEFF,

, A. W. SMITH.

